Mechanical stoker.



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Patented Dec. 24, 191.2.

MECHANICAL STOKER.

W. SEATON, JR., DECD. J. N. SBATON. ADMNISTRATRIX.

APPLIUATION FILED JUNEm, 1905.

Attest:

W. SEATON, JB., DECD.A

N1 SEATON,

. Patented De@ 24, 1912.

ill'SHEETS-SHBET Inventor: u VMM@ www by L LL uw Atty W. SEATON, JR., DEGD. nf. N. sBA'roN, ADI-11NISTRATRIXA MECHANICAL S'IOKER. APPLwMloN rum JUNE 27,1005.

Patented Dec.- 24, 1912.

4 SHEBTS-SHEET 3.

n so

Inventor: w uw WU? n1 A 1MM um ha Atty @FETCH WILLIAM SEATON, JR., OF NEW YORK, N. Y.; JEANNETTE NEILSON SEATON ADMINIS- TRATRIX OF SAID WILLIAM SEATON, JR., DECEASED.

MECHANICAL STOKER.

Specification of Letters Patent.

'Pat ented Dee. 21,1912.

vApplication filed June 27, 1905. Serial No. 267,174.

To all whom it may concern.'

Be 1t known that I, XVILLIAM Herron'. Jr.,

a citizen ofthe United States. and a resident of the borough of Richmond, city o1' New York, State of. New York, have invented a certain new and useful Mechanical Stoker, of which the it'ollowing,T is; a specileatitm.

My invention relates to a new form of mechanical Stoker whereby l am enabled to produce combustion hy a simple meana` which is more etl'eetive than any apparatu 4 for a similar purpose which has hitherto been in use.

In order to produee complete combustion it is necessary to yfeed the fuel into the l'urnace in a regular manner, to regulate the thickness of the fuel on the grate, to partially coke the fuel on the grate, to regulate the speed at which the fuel advancea on the grate` to regulate the admi sion of air toi the fire above and below the grate and to regulate the frequency ol' agitation ot' the fire. All of these objects are sta'eeasl'ully ar-eomplished by the means herein disclosed and irr addition provision is made for the regular emission and dispoaal ot' ashesI so that they do not accumulate under and burn out the gratjes, and for the frequent inspeetion of the condition vof the lire. Provision is also made for banking the lire and t'or preventingf it. from eating bark into the niagazine.

Other advantae'esl ivill'appear in eonneetion with the desr'ript'ion of the preferred forni of appro-atar4 and the mod(A ol' oper tion thereof.

.1n the following l have deaeribed with reference to the atc(nnpanyin;T dra winesfsone form. of structure illustrating my invention, the feature thereof beinf.,r more particularly pointed out; hereinafter in the claims.

In the drawings; Figure 1 is a side ele\'ation partly'diagran'imatic and partly iu ser:- tion along the'lne 1-l olFig. 2 of a fur-- nace and boiler provided 'with the preferred form of my new mechanical atoker. Fig. :2 is a front elevation of the same, parta being:l removed to more clearly illustrate the eon- ,Strueton of the apparatus. Fig. il is a .side elevation, party being' broken away, of a portion of the apparatusV illustrated in Fig. 1 on a slightly enlargtal-seale, but showing' the magazine hopperelosed and the apparatus arranged for the ready inspeetion ol.

'the interior of the furnace. Fig. L is a de- ,1. l l l r l l l tail plan `view of a portion ot' the grate hars and the Supporting' beams. Fig. is a detail View ot" the 'l'ront end ol' the grate bars, parta` being broken away to more elearly illustratet'he means for removingf the grate bars from the grate. Fig'. (i is a diagranr matie view of the actuating meehanism on a Slightly enlarged scale, parts lit-.ingr broken away`r the operating' eylinder beingr dis` placed from its true po ition (Fig. 1) for oonvenieme ot illustration. Figs. T and 8 are detail views; on an enlarged .scale illu tri-ating one lucana of supl'aorting one end of the grate bars. Fig. l) is; a detail view, parteI being broken away. to more clearly illustrate the r'ontrol ol' the :n-tuat'ng mechanism. i I

Similar numerals ol' rel'erenr'e indieate similar parts throughout the several views.

1l. represents the ordinary torm ol' tire tube boiler' provided with tubes 3, through which the prodneta ol' eombnstion paas into tho [lmi, The boiler is upported in any eonvenient manner.

t is the :combustion chamber and 5 is the 'furnace provided with an arch G of lire briek in the usual manner.

T, T and S, 8 rel'n'eaent the ,grate barsy I"eparate from each othe` and Iaeparately supported on bearing beams S) and ll). The alternate barl 7, 7 are hooked over beam '10 and bara ich S over beam Si. The free ends of the bara are lengthened to permit the reeiprof'ating motion hereinafter dexerihed. leam 1t) ia supported on wedges 1l, one at. earh end, resting on braokel l2 secured to lla-.sido wall of the furnafe. The brackets l are provided with upwardly extending lung..` or guides 13 to prevent lateral movement ol` the beam .10.-

l`he beam 5) is preferably made integral with the baek plate 14 of a rocker pivotally supported at. 15 in a. hase plate 1li. The roeker also comprises a frontV plate 17 havine a lip t8 preferably eurved on a radius having point 15 as its center. The rocker is provided with a rib l!) for the .purpose hereinafter Set forth. Back plate 14 is provided with openings 20 to permit. the ends of grate hars 7, 7 to projeet therethrough duringr the oscillation of the rocker and to provide for ready removal of the hars from the furnace, the relationship between the bars and the olienings being auch that no air passes therethrough. The back plate 14 also pivots 2T. This gate is adapted. to swing.

so as to close the`bottom o the hopper as and When desired as hereinafter set forth. Between the beck Wali oi hopper 23 and the iront of the furnace is an air chamber provided with series of apertures for admitting air, and a series of apertures for discharging the saine into the iront pari of the furnace.

There is a gap 81 between the top ci t inner ends of the grate bars and the bridge Wall 32. The size of this gap can. be, ad justed'by means of the Wedges il so as to increase or decrease the same as desired 'thus providing ineens for the emission ci ashes Without admitting air iron'i below around the ends of the grate bars. n

vThe ash pit 22 is shaped so as to provide for-a Water seai 33 which in conjunction l pump 43.

with a plate 3s secured to beam l() is adapted to formadditional or independent means ior .preventing the air from passing from the ash pit up through the gap 3l. The Water in the water seal also serves to quench the ire in the ashes which latter are adapted to be removed from the ash pit by means ofv a conveyer vconfiprising an endless chain. or Wire 35 carrying disks, iights or buckets.

36, and driven by any',7 suitable power.

The apparatus for actuating the rocker and connected parte comprises cyiinder 37 adapted to oscilia'te on pivot 38 on a suitable bed plate The rocker is pivoted on the end of piston rod i0 as at fil to rib 1.9 so that the reciprocating motion of the piston rod is communicated to the rocker which osciilates about point 15. The piston'li of cyl: inder 3'? may be driven by any snitabie mea-ns, but as iliustrated, is adapted 'to driven by hydraulic pressure ed by The Water from pump i3 passes through pipe 44C 'to a valve i5 in vaiveI fir-6. Valve 4-5 is provided with pas'. e7 and 48. Passage e7 is adapted to register alternately with pipe 44: leading from the pump and pipe 49 leading tothe cylinder 37, and pipe e9, then acting as an exhaust, and pipe 50 leadin to the exhaust valve 5i.

assage i8 is a aptedto register alternately in a simiiar manner with pipe 4.1i and pipe 52 leading to the other end of cylinder 37, and pipe 52, acting; as an exhaust, and pipe 53 leading to exhaust valve 5i. Valve stern 54C of valve 5 carries iooseiy mounted there on an arm 56 having a Weight 5?? at its outer end. A. segment 578* having i'ianges 5S snol 'ringed vri-.ive 51?@ for the purpose f -18 being greater than. the. reces resserre hereinafter set forth. in arm 60 iooseiy mounted in guides 51, suitably supported, isk pivoted to the rocker as at 62, andv is pro-- vided with adjustable nuts. S3 and Gli adapted to contact alternately with arm 56 as the rocker osciilates. A. bridge piate 65 iSl hooked to 'front plate 17 of 1he rocker, the outer end siiding on the grate bars end is adapted to bridge between said plate l' and graie bars. The iront end of arch 6 is supported on a rib 66 preferably integrai with the back Weil of the hopper. s

The operation ci? the apparatus is as iol'- lcws: The ire being started the hopper is iiiled with coal which rests upon ihe :trent plete i? of the rocker the parts being ai'w shown in Fig. i. The pision red 4G is then caused to reciprocate by 'the means disclosed thus causing the coal to advance upon. the front plaie i? and the bridge' plate. (i5 to the grate bars along which it is moved by the reciprocating motion imparted to th aiterna'te bars by the rocker. This advancing motion of 'the coal. is made in such manner that no holes are 'formed in the iire the coal is constantly being crowded upon plate 17. The movement of valve 45 is controlled by the movement of arm 56, in turn actuated by rod 60, the mits 63 and @Il being 'adjustable toward and away from each other to provide for a quicker or sic-Wer reciprocation' of piston rod 40. When arm 56 is pushed past the verticalv position in either direction, Weight 574- causes arm 56 to fali against flanges 58er 59 of eee 57 on valve stem 5e', hence turning the valve to cause piston rod i0 to descend or advance as the case be. The oscillation oi plate "i7, to which ad GG is pivoted, causes rod to reciproce..,` and to bring nuts G3 and 64C alternateiy into contact with is the cosi advances aie/ng plaie i7 and bridge plate 65 the heat reiected from the arch 6 partiaily cokes the coai the piates. This partially ecke-d coai is im burned on the graie bars as it advances, the ashes 4are carried over the ends bars and deposited. in the ash 33 by i@ ty, 'the water the ash pit serving quench 'the in the ash 1 and preventi the grate ironi being, 7 f cunniation ci hot underneath f The iliat ifrcm the parifiaiiy ce.. coal-on plate i? and bri-'ige piate 65 n be mixed with a reguiaied supply of er adx-nitted through apertures 30 and burned over the incandescent foei in such manner that the Whole operation is praeticeiiy enricheless.

i The stroke et the point of emission ci" the coal from the hopper is greaier'than any Where else, the radins 'from pivot coef. n arest the 'FIG pivot to beam 9 hein point adrnissrcr masses fastest which results in closing np the holes in the fuel bed due to eoking on the plate,`

' or to anunequal rate of combustion on the bars.

A A The thickness ot the fuel bed may be regu- *lated` by adjusting the stroke ot' the piston7 a long' stroke permitting more eoal to he emitted from the hopper than a short stroke.

If a short stroke is preferred the thickness l@ of the fuel bed may be regulated by determining the point in the cylinder about which the piston shall make its stroke because it' the rocker is oseillated about a point which more or less shuts the bottom ot the hopper the thickness of the -t'uel hed is varied although the length ol' the stroke ma)v remain the same. The angle ot plate l? and bridge plate (l5 is `inst below the angle ot re- \pose of the coal hence the coal will not slide on -the plates, but. must be pushed by other coal coming in from behind. ',lhe coal will not. nipte forward unless coal is coming vt'rom the tppert. the advancinga motion being caused by-t ie'combined rocker motion and pushing etieet of the eoal 'falling from the hopper behind the eoal on the plates. i 'lhe oscillation of the rocker causes the. grate hars S, hooked onto the beam t), to move horirontally with a slightly vertical motion. the

amount pt' vert-iml motion being eontrolled prineipallbir by the width ot the beam` the Wider the beam the more vertieal umtion.

Provision may be made against the .sittingr of the tine partieles et' eoal which may have escaped being coked h v making,r the openings between the grate bars smaller at the l'ront than at the rear end. The combined etl'eet of this motion oit the `rate hars is to cause1 a slidinmshaking and raspingf motion whieli 40 is benetii'ia'l hy breakingup the i'uel hed and Clinkers and remoif'inla' the ashes 't'rem the under sideol' the lire. 'lhe 'forward hori` zontal movement ol' the hars carries the coal with them hut the eoal is prevented from 'Following the ,grate bars in their haek- Ward im'lvement by a new charge of coal falling from the hopper onto plates 1T and 65 behind the coal carried t'orward as dcscribed thusI crowding the `t'uel together and 'prevent-ing exposure o't the grate bars 'from the relleeted heat from the arches.

The ashes which have not been sifted through the grate bars as described and the elinlcers are carried to the innerend of the bars where they are macerated and `pushed ot into the water in the ash pit, The plate depending;r in the water seal cuts oil the air from passing through the gap 31 and thus prevents poor combustion, the air being?,r

so forced to'pass through the t'uel bed and not l'permitted to pass around it. The ashes which sift through the grate .bars into the water in front of the plate 34, together with the ashes pushed over the ends of the `grate bars, arev conveyed out by the eonveyer which l"or to the arranbfemei..` of

l l l i l .pi rt for one It is obvious that details of construction t and the arrangement of parts may be considerably varied without departing from the spirit o1 my invention and l do not restrict myself to the detailsl :is shown and described parts illustrated but lVhat I claim and desire to secure by Letters lalent of the United States is:---

l. Vln an apparatus of the charaeter described the combination of grate hars, a

rueking member adapted to support one end ot said grate bars and to rock the same, a

'feeding and eolcrnr plate integral with said rocking member and inclined toward the grate bars in its normal position and means tor imparting moven'ient to said rocking memlwr, the arrangement of parts being sueh that the fuel falling upon said plate is caused to travel along said grate bars.

t). ln an apparatus ot' the character described the combination ot' grate bars, a support 'for one end ot said grate hars adapted to impart movement to said grate hars, a 'feeding and coking plate integral with said lsupport and inclined toward the grate bars in its normal position and means for imparting movement to said support, the arrangement, ot' parts beingr such that fuel l'allinpr upon said plate islcaused to travel along said `f rrale hars.

El. [n an apparatus of the character de-i lserihed .the combination of grate bars, a

movable support 'for one end 0f Said grate hars. a stat umary support for the other end, a teedinel and eokine plate integra-l with `said support and inclined toward the grate harsI in its normal position and means for imparting movement to said movable support hereby horizontal movement is given lo some ot said grate bars with relation to the others, the arrangement of parts being sueh that fuel falling upon said plate is caused tolravel alongr said grate bars.

'l-. ln an apparatus of the character described the combination of grate bars,-`a support for one end of said grate bars adapted to impart movement to said grate bars, a feeding, and eoking plate integral with said support and inclined toward the grate bars in its normal position, means for imparting movement to said support and a one side of said hopper forming means for closing said hopper.

'.l'n an apparatus 'of the character described the combination of grate bars, a snpend ol' said grate bars adapted to impart movement to said grate bars, a movable 'feeding and eokingr plate integral hopper adapted to discharge on said plate,`

with said support and inclined toward the grate bars in its normal position, means for imparting movement so support and 'xneans for regulating ehe degree of seid movement. Y

6. In an apparatus of the character de- 5 scribed the combination of gra te bers, e sup'- port for 'one end bereoi adapted io imperi', movement thereto, e. feeding; and. eoking plate integrali with said suppone and inclined toward the grate bers in ite normal K' vposition, means for imparting i'novemen'r io Said support. and means for eontroiiing jche de ree ofA seid movement. v

In an apperaus of the character described the eomb'inznioii grate bars9 ineens i for adjustably supporting one end of grate bars, a rocking member edepted to `:support the other end said grabe bars and 'to rock the Seme, a hopper. e feeding and ciging plete integrai .with seid rocking mex'' l' and'inelined @beweerd be grate bars "ein it 'finormai position., seid plate being adapted to receive uei from seid hopper,

and means for imparting movement to said rocking member, the arrangement of .parte being such that fuel felling upon the plete is' caused to travel along the grate bers.

. 8.. In, an pparatus A`oii, :herclfiaraieifer described the Lcombination ofgrete bars, means for adjustably sup-porting the same at one end, a, rocking member adapted to ,support the same at the other end and, to rock the same, :n.feding and eoking plate moving -With said rocking member, means for iinparting movement to seid rocking member and means controlled by seid rocking inember adapted to iimii'z the degree of seid. movement.

9. In en apparatus of ighe character described /the combination of grate bars, a

e0 rocking member ildapted 'no support one end of the same and to rock said grate bers, a feeding and eeking; piate integral with said rocking member and inclined iovmrd the s grate bars in immer-mal position end e hop 15 per adapted to discharge on toseid. plete.

eee

the arrangement Le? pars 'being' suoli thai", `he mofxf'emen of bars and the pete together with tie pressure o the eoei, from the hopper Wiil cause be coal to breve); along seid grate i0. En en apparatus oi scribed the ,eombinnion of grate bere, e beam :it one end of Seid ginie bars` upon which seme of tbe bars rese and over which others are booked, e member at the other end of grate bars upon which the ggrzie bere booked on the been; rest and the bers resting; on 'the beam are booked, mens *for aeLm'iii/igj seid, rocking member to eoinnn ncete combined borizonii vertical moven'iem to said ginie bars. 'fue verticai movement being iinpzired :it oniy one end of siii: gmte bars, e feeding; and ceiling plaie moving with seid rocking member, biete bridging beween said iis named piate and d gree bare sind ze hopper edapeci to discharge upon seid first named plate, the 'parte be Je; so er ire'nged and conneeied the@ zbe fuel daislehzugnng from the hopper will be caused to travel along said first named plete and the' grate bars.

1l'. n in apparatus of tbe character described the combination of grate barsfe rocking' member supporting one end of the same and adapted io roel; the saine, e feedingV and coking plate integral with said rocio ing member and. inclined toward the grate bare 'in its normal position, e hopper adepted to discharge upon seid plaie and means permiingi; air '5o be admitted into the front part of tbe furnace e. ove peie.

In Witneeewiereoi i have signed my name in the peeenee o. bevo subseiing Witnesses. y

W'ILLA/ SEATN, JR.

fiitnesees:

the character de- 

